Michaeli / Greif / Kretzschmar Training in Injection Molding

A Text and Workbook
1. Auflage 2013
ISBN: 978-3-446-40182-2
Verlag: Carl Hanser
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 159 Seiten

This text/workbook covers the entire field of injection molding - from materials, to processing, to issues of occupational safety, and to the recycling of injection molded parts. Key questions help readers work through the lesson with specific objectives in mind. Review questions allow readers to test their knowledge.
Reviews: '... accomplishes its intended purpose of being an excellent [general] teaching aid.' Injection Molding
Contents:
- Basic Principles of Plastics
- The Injection Molding Machine
- The Plasticating and Injection Unit
- The Mold
- The Clamping Unit
- Drive Systems and Controls
- The Injection Molding Process
- Mold Design
- Quality Assurance in Injection Molding
- Recycling of Plastics Waste
- The Modern Injection Molding Company
- Occupational Safety Around Injection Molding Machines
- Glossary of Injection Molding Technology

Dr. Helmut Greif is former Managing Director of AGIT mbH (Aachener Gesellschaft für Innovation und Technologietransfer; Aachen Association for Innovation and Technology Transfer).

Autoren/Hrsg.

Michaeli, Walter

Greif, Helmut

Kretzschmar, Gernot

Ehrig, Frank

Fachgebiete

• Technische Wissenschaften Verfahrenstechnik | Chemieingenieurwesen | Biotechnologie Mechanische und Thermische Verfahrenstechnik
• Technische Wissenschaften Verfahrenstechnik | Chemieingenieurwesen | Biotechnologie Technologie der Kunststoffe und Polymere

Inhaltsverzeichnis

1;Foreword;6
2;Preface;8
2.1;Lessons;8
2.2;Key Questions;8
2.3;Prerequisite Knowledge;8
2.4;Review Questions;9
2.5;An Example: The Compact Disk (CD);9
2.6;Appendices;9
2.7;Acknowledgments;9
3;Contents;10
4;Introduction Injection Molding – An Ideal Manufacturing Method;12
4.1;Key Questions;12
4.2;Contents;12
4.3;Injection Molding – A Young Production Method;13
4.4;Injection Molding – A Discontinuous Single-State Process;13
4.5;Injection Molding – The Injection Molding Machine and Mold;14
5;Lesson 1 Basic Principles of Plastics;16
5.1;Key Questions;16
5.2;Contents;16
5.3;1.1 Classification and Identification of Polymeric Materials (Plastics and Elastomers);17
5.4;1.2 Deformation Characteristics of Plastics;19
5.5;1.3 Molding Compounds and Shaping Methods;22
5.6;1.4 Plastics Melts;23
5.6.1;1.4.1 Viscosity;23
5.6.2;1.4.2 Shear Stress and Shear Rate;24
5.6.3;1.4.3 Viscosity and Temperature;25
5.7;Review Questions;29
6;Lesson 2 The Injection Molding Machine;30
6.1;Key Questions;30
6.2;Contents;30
6.3;Prerequisite Knowledge;30
6.4;2.1 Classification of Injection Molding Machines;31
6.5;2.2 Structural Units of Injection Molding Machines;35
6.6;2.3 Special Injection Molding Processes;37
6.6.1;2.3.1 Structural Foam Molding;37
6.6.2;2.3.2 Multi-Injection Molding Process;38
6.6.3;2.3.3 Injection-Compression Molding;39
6.6.4;2.3.4 Back-Injection Technology;39
6.7;Review Questions;41
7;Lesson 3 The Plasticating and Injection Unit;42
7.1;Key Questions;42
7.2;Contents;42
7.3;Prerequisite Knowledge;42
7.4;3.1 Tasks of the Plasticating and Injection Unit;43
7.5;3.2 Plasticating;46
7.6;3.3 Injection;48
7.7;Review Questions;51
8;Lesson 4 The Mold;52
8.1;Key Questions;52
8.2;Contents;52
8.3;Prerequisite Knowledge;52
8.4;4.1 Tasks and Modes of Operation;53
8.5;4.2 Gating and Runner System;54
8.5.1;4.2.1 Basic Principles;54
8.5.2;4.2.2 Gate Design;55
8.6;4.3 Cavity;58
8.7;4.4 Heating/Cooling Systems;60
8.8;4.5 Ejection System;61
8.9;Review Questions;65
9;Lesson 5 The Clamping Unit;66
9.1;Key Questions;66
9.2;Contents;66
9.3;Prerequisite Knowledge;66
9.4;5.1 Function and Structure;67
9.5;5.2 Mechanical Clamping Units;68
9.6;5.3 Hydraulic Clamping Units;70
9.7;Review Questions;73
10;Lesson 6 Drive System and Controls;74
10.1;Key Questions;74
10.2;Contents;74
10.3;Prerequisite Knowledge;74
10.4;6.1 Drive System;75
10.4.1;6.1.1 Hydraulic Drive;75
10.4.2;6.1.2 Electric Drives;77
10.5;6.2 Controls;78
10.6;Review Questions;79
11;Lesson 7 The Injection Molding Process;80
11.1;Key Questions;80
11.2;Contents;80
11.3;Prerequisite Knowledge;80
11.4;7.1 Phases of an Injection Molding Cycle;81
11.5;7.2 Start;83
11.5.1;7.2.1 Mold and Clamping Unit;83
11.5.2;7.2.2 Plasticating Unit;83
11.5.3;7.2.3 Controls;83
11.5.4;7.2.4 Hydraulic- and Electrical Systems;84
11.6;7.3 Injection Phase;85
11.6.1;7.3.1 Mold and Clamping Unit;85
11.6.2;7.3.2 Plasticating Unit;85
11.6.3;7.3.3 Controls;86
11.6.4;7.3.4 Hydraulics;86
11.7;7.4 Holding Pressure Phase;88
11.7.1;7.4.1 Mold and Clamping Unit;89
11.7.2;7.4.2 Plasticating Unit;89
11.7.3;7.4.3 Controls;90
11.7.4;7.4.4 Hydraulics;90
11.7.5;7.4.5 Cooling Phase;90
11.7.6;7.4.6 Feed Phase;90
11.8;7.5 Cooling Phase;91
11.8.1;7.5.1 Cooling Time Equation;91
11.8.2;7.5.2 Mold and Clamping Unit;92
11.8.3;7.5.3 Plasticating Unit;92
11.8.4;7.5.4 Control and Hydraulic Systems;92
11.9;7.6 Feed Phase;93
11.9.1;7.6.1 Mold and Clamping Unit;94
11.9.2;7.6.2 Plasticating Unit;94
11.10;7.7 Removal from the Mold;94
11.10.1;7.7.1 Mold and Clamping Unit;95
11.10.2;7.7.2 Plasticating Unit;96
11.10.3;7.7.3 Hydraulics and Controls;96
11.11;Review Questions;97
12;Lesson 8 Mold Design;98
12.1;Key Questions;98
12.2;Contents;98
12.3;Prerequisite Knowledge;98
12.4;8.1 Tasks and Specifications of Injection Molding Tools;99
12.5;8.2 The Designer's Tasks;99
12.6;8.3 Mold Layout;101
12.6.1;8.3.1 Overview;101
12.6.2;8.3.2 Rheological Mold Layout;102
12.6.3;8.3.3 Thermal Mold Layout;105
12.6.4;8.3.4 Mechanical Mold Layout;106
12.7;Review Questions;109
13;Lesson 9 Quality Assurance in Injection Molding;110
13.1;Key Questions;110
13.2;Contents;110
13.3;Prerequisite Knowledge;110
13.4;9.1 Quality;111
13.5;9.2 Quality Assurance;112
13.6;9.3 Quality Management;113
13.6.1;9.3.1 The Quality Assurance Concept;115
13.7;9.4 Integrated Management Systems;119
13.8;Review Questions;121
14;Lesson 10 Recycling of Plastics Waste;122
14.1;Key Questions;122
14.2;Contents;122
14.3;Prerequisite Knowledge;122
14.4;10.1 Reutilization of Plastics;123
14.5;10.2 Recycling of Production Waste;126
14.6;10.3 Recycling ofIndustrial and Domestic Plastics Waste;127
14.7;Review Questions;129
15;Appendix I The Modem Injection Molding Company;130
15.1;Key Questions;130
15.2;Contents;130
15.3;Prerequisite Knowledge;130
15.4;I.1 Structure of an Injection Molding Company;131
15.5;I.2 Order Processing Organization within an Injection Molding Company;132
15.6;I.3 Specifications for Injection Molding Companies;133
16;Appendix II Occupational Safety Around Injection Molding Machines;135
16.1;Key Questions;135
16.2;Contents;135
16.3;II.1 European Regulations;136
16.3.1;II.1.1 Accident Prevention Regulations for Injection Molding Machines;136
16.3.2;II.1.2 Endangerment and Essential Danger Areas;136
16.3.3;II.1.3 Accident Prevention Regulation (APR) for Injection Molding Machines;138
16.3.4;II.1.4 Implementation Instructions for APR on Injection Molding Machines;138
16.4;II.2 U.S. Regulations;140
16.4.1;II.2.1 Safety Procedures;140
16.4.2;II.2.2 Safety Regulations and Information;142
17;Appendix III Selected Literature;144
18;Appendix IV Glossary of Injection Molding Technology;147
19;Answers to Review Questions;157
19.1;Lesson 1;157
19.2;Lesson 2;157
19.3;Lesson 3;157
19.4;Lesson 4;157
19.5;Lesson 5;158
19.6;Lesson 6;158
19.7;Lesson 7;158
19.8;Lesson 8;158
19.9;Lesson 9;158
19.10;Lesson 10;159

Über Autor(innen)

Greif, Helmut
Dr. Helmut Greif ist Geschäftsführer der Aachener Gesellschaft für Innovation und Technologietransfer, AGIT mbH.

Ehrig, Frank
Prof. Dr.-Ing. Frank Ehrig ist Institutsleiter am IWK Institut für Werkstofftechnik und Kunststoffverarbeitung, Rapperswil/Sankt Gallen, Schweiz.

Dr. Helmut Greif ist Geschäftsführer der Aachener Gesellschaft für Innovation und Technologietransfer, AGIT mbH.